Pocket hand-lamp



J. GRAVES.

POCKET HAND LAMP. APPLICATION FiLED NOV. 10. 1919.

1,375,587. P t ted Apr- 19, 1921'.

2 SHEETSSHEET l.

Jhm Graves,

J. GRAVES. POCKET HAND LAMP.

APPLICATION FILED NOV. 10, 1919- 1,375,587. Patented Apr. 19, 1921.

2 SHEETSSHEET 2- 40 Q; Z4 2 36 Z i 15 54 l l l I '1 l i 15 7% {mm i 1 J6i I i 5 i l JOHN GRAVES, OF MADISON, WISCONSIN, ASSIGNOR 'IO FRENCH BATTERY & CARBON 00., OF MADISON, WISCONSIN, A CORPORATION OF WISCONSIN,

rocxn'r HAND-LAMP.

Specification of Letters Patent.

Application filed November 10, 1919. Serial No. 336,940.

To all 'wlwmz't may concern: Be it known that I, JOHN GRAVES, a citizenof the United States, residing at Madison, in the county of Dane andState of W1s cousin, have invented a certain new and useful Improvementin Pocket Hand-Lamps, of which the following is a specificatlon. 1 Thisinvention relates to pocket hand lamps of the type commonly known asflash lamps comprising broadly a case, an electric light bulb and a drybattery so combined that the electric bulb may be lighted at the will ofthe operator by current supplied from the dry battery. More particularlythe invention relates to that type of device exemplified in Patent No.1,257,596 to J. C.

.Ford, issued February 26, 1918, in which the lamp and battery areseparated by a partition rigidly secured transversely of the case toprevent the battery ever being driven against the lamp and, smashing 1t,and in which electric contact between the batte andthe lamp is effectedby leading termJ- nals or switch members into a transverse opening inthe partition to be there made to contact each other.

The object of the invention is to provide a novel operating means forbringing the switch terminals or contact members which are in thetransverse opening in the partition into contact with each other. a

The invention consists in means in carrying out this object in whichvery effective insulation of the operating mechanism is provided sothat' it can be operated by mechanism reciprocatable longitudinally ofthe lam case without danger of short circuits. ore particularly theinvention consists in means for carrying out the foregoing objects whichcan be easily and plieaply made, which is satisfactory in operation, andwill not be readily liable to get out of order.

Still more particularly the invention consists in man features anddetails of construction which will be hereafter more fully set forth inthe specification and claims.

Referring to the drawings in which like numerals represent the sameparts,

Figure 1 is a sectional detail view through a hand lamp mechanismequipped withthe device of the invention in its preferred form, the case10 being metal and conveying current from reflector 26 to cap 12.

Fig. 2 is a plan view on the line 22 of Fig. -1.

Fig. 3 is an inverted 3-3 of that figure.

Fig. 4 is a side view ofa portion of the case showing the button movablelongitudinally 1n thecase for operating the switch.

Iflg. 5 differs from Fig. 1 onl in that the switch mechanism is shown inchanged position with the electric circuit between the lamp and batteryestablished, and that a fiber case 70, well known in the art, issubstituted for case 10, the connection between the battery and lampbeing made through a well known rod 72.

Fig. tive.

As in the device of the prior patent referred to, the essentialoperating parts, other than those entering specifically into theinvention as shown in Fig. 1, comprise an exterior metallic case 10closed at the bottom by a cap 12 inside of which is a spring 14contacting the lower terminal of the battery 16 whose upper terminal 18lies centrally of the case 10 and at a substantial distance along thecase from the central terminal 20 of the light bulb 22 whose outerterminal 24 rests in the'reflector 26, held in engagement with the case10 by the perforated cap 28 which incloses the rim of the lamp 30.Between battery terminal 18 and lamp terminal 20, as in the prior artreferred to, there is rigidly secured inside the case a disk orpartition 32 of insulating material having explan view on the line 6shows connecting rod72 is perspectending transversely through it,usually at one side thereof, a perforation 34 entered from the top asshown in the drawing by the swinging free end of a flat spring terminal36, secured to the upper side of the plate by any suitable means asscrews 38 and having its other end 40 in engagement with terminal 20 ofthe lamp. Similarly, entering perforation 34 from the bottom is the end420i a spring terminal secured to the underside of the plate 32 by anysuitable means as screws 44 and having its opposite end 46 engaging theupper terminal 18. The above mentioned prior patent illustrated severaldifferent mechanisms for forcing contact members 36 and 42 intoengagement with each other to establish a complete electric circuitthrough the lamp. In providing the improved means of this invention foraccomplishing this result the plate 32 is perforated radially of thecase 10 and partition 32 to allow for mounting therein thereciprocatable Patented. Apr. re, 1921.

insulated plunger 48 adapted to be moved between the positions of Fig. 1and Fig. 2 to close the electric circuit as desired, and to be movedbackward in the position of Fig. 1 by the spring action of member 36. Inorder to provide means for moving this plunger 48 from the position ofFi 1 to that of Fig. 5 and mechanically holding it in that positionand'to do this from outside the case, the disk or partition 32 isprovided with an additional transverse perforation 5O opposite toperforation 34, said perforation 50 being entered by the outwardlyextending end of plunger l8. Reciprocatably mounted lengthwise of thecase 10 in a suitable cover 52'applied to the outside of the case by anysuitable means such as rivets 54 is an operating handle 56 sliding in aslot 58 provided for 'it. This handle 56 is supported upon andoarrieclby an irregularly shaped metallic frame 60 mounted and slidablein the space 64 between the cover member 52 and adjacent portion of wall10. This member 60 has protruding from it and entering the inside ofthecase through a slot 66 a wedge shaped member 68 reciprocatable alongthe inside of the case by movement of the handle 56 between the positionof Fig. 1 and that of Fig. 5.. This wedge 68 is of such a size,

-shape, and so positioned with reference to the other parts that whenthe parts are in position of Fig. 1, and plunger 48 is moved by member36 to the osition of that figure, the circuit through-t e lamp is brokenby the separation of contacts 36 and 42, and that when the wedge ismoved to the position of Fig. 5, it forces plunger 48 to the position ofthat figure with members 36 and {12in electric contact with each other,thus lighting the lamp in the ordinary manner.

' As heretofore noted, the structure of Fig. 5 differs from that of Fig.l in mechanical construction only in the use of a fiber or otherinsulating case70 in place of metallic case 10 shown inFig. 1 thecontinuouselectrio connection between the reflector 26 and the ca 12being madeby metallic .bar 72 proper y inserted, as shown.

Having thus described my invention what I claim as new and desire tosecure by Let? ters Patent, is

.1. In mechanism of the classv described,

' a case, a transversely perforated partition across the case, normallyseparated electric contact members entering said perforation fromopposite sides of the partition, and a plunger mountedin an opening inthe partition and reciprocatable across the case to force one contactmember into engagement withthe other.

2. In mechanism of the class described, a case, a transversely erforatedpartition across the case, normal y separated electric contact membersentering said perforation. from opposite sides of the partition, and a Iplunger mounted in an opening in the para case, a transverselyperforated partition across the case, normally separated electriccontact members entering said perforation from opposite sides of thepartition, and a plunger mounted in an opening in the partition andreciprocatable across the case to force one contact member intoengagement with the other, one of said contact members being of springmaterial and adapted to resist the movement of the plunger.

4. In mechanism of the class described, a case, a transverse partitionperforated at two opposite points, normally separated contact members inone perforation, a wedge member reciprocatable along the inside of thecase through the second perforation in the partition, means outside thecase for. reciprocating said wedge, and means movable along thepartitions and actuated by said wedge, adapted to close said contacts.

5. In mechanism of the class described, a case, a transverse partitionperforated at two opposite points, normally separated contact members inone perforation, a wedge member reciprocatable along the inside of thecase through the second perforation in the partition, means outside thecase for reciprocating said wedge and means reciprocatab'le in a thirdopening in thepartition and-actuated by said wedge, adapted to closesaid contacts. l

6. In mechanism of the class described, a case, a transverse partitionperforated at two opposite points, normally separated contact members inone perforation, a wedge member reciprocatable along the inside of thecase through the second perforation in the partition, means outside thecase for reciprocating said wedge and a plunger of insulation materialmovable along the par-.

tition and actuated by said wedge, adapted to close said contacts.

7. In mechamsmof the class described,-

erforated at the case through the second perforation in the partition,means outside the case for reciprocating said wedge, and means movablealong the partition and actuated by said wedge, adapted to close saidcontacts, one of said electrical contact members being a springresisting the movement of the member actuated by the wedge.

9. In mechanism of the class described, a case, a transverse partitionperforated at two opposite points, normally separated contact members inone perforation, a wedge member reciprocatable along the inside of thecase through the second perforation in the partition, means outside thecase for reciprocating said wedge. and reciprocatable in a third openingin the partition and ac: tuated by said wedge, adapted to close saidcontacts, one of said electrical contact members being a springresisting the movement of the member actuated by the wedge.

10. In mechanism of the class described, a case, a transverse partition,perforated at two opposite points, normally separated contact members inone perforation, a wedge member reciprocatable along the inside of thecase through the second perforation in the partition, means outside thecase for reciprocating said wedge and a plunger of insulation materialmovable along the partition and actuated by said wedge, adapted to closesaid contacts, one of said electrical contact members being a springresisting the movement of the member actuated by the wedge.

11. In mechanism of the class described, a case, a transverse partitionperforated at two opposite points, normally separated contact members inone perforation, a wedge member reciprocatable along the inside of thecase through the second perforation in the partition, means outside thecase for reciprocating said wedge, and a plunger of insulation materialreciprocatable in a third opening in the partition and actuated by saidwedge, adapted to close said contacts, one of said electrical contactmembers being a spring resisting the movement of the member actuated bythe wedge.

In'witness whereof, I have hereunto'subscribed my name in the-presenceof two witnesses.

JOHN GRAVES. Vitnesses D. E. Wm, P. A. Bmoos.

